<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>jq事件绑定</title>
	</head>
	<body>
		<div id="btn">
			点我
		</div>
		<script src="js/jquery-1.8.3.min.js"></script>
		<script>
			$("#btn").one("click",function(){
				alert("hello");
			})
		</script>
	</body>
</html>
